HARKEN 12mm Bolt-Down Fairlead — Single, 3274 Blocks_Fiddle Commonly 57mm fiddle blocks are

Commonly 57mm fiddle blocks are for jibsheets and vangs on small dinghies

or lashed to almost anything

Other features include an adjustable back support

The load-sensing ratchet block rolls freely in both directions under low loads

Good for jib and mainsheet systems on high-performance dinghies

HARKEN 12mm Bolt-Down Fairlead — Single, 3274 Blocks_Fiddle Commonly 57mm fiddle blocks areHarken Bolt Down Fairleads are used on boats 615 m (2050 ft) as shallow angle line deflectors. These weight saving fairleads are built of 6061 T6 Hard Lube anodized aluminum for durability. Smooth surfaces and radiused center holes minimize line wear.  3274